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Fix fct_lump example (#918) 

* happen to have "Other" in factor levels

* rescind code change, instead add comments

* make an exercise
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Mitsuo Shiota 2021-02-09 22:25:34 +09:00 committed by GitHub
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@ -329,3 +329,5 @@ gss_cat %>%
Independent changed over time?
1. How could you collapse `rincome` into a small set of categories?
1. Notice there are 9 groups (excluding other) in the `fct_lump` example above. Why not 10? (Hint: type `?fct_lump`, and find the default for the argument `other_level` is "Other".)